Kiln.



M. R. ISAACS.

KILN.

llgggljggfio APPLICATiON FILED JULY 7. I916- Patented 3,

2 SHEETS-SHEET I.

M. R. ISAACS.

KILN.

APPLICATION FILED JULY 7.1916.

93., Patented July 3, 1917.

2 SHEETS-SHEET 2.

MM gb koLm Philadelphia, in the county of a and distributed; thirdly,

IVIONE R. ISAACS, 0F PHILADELPHIA, PENNSYLVANIA.

KILN.

Application filed July '7, 1916.

To all whom it may concern:

Be it known that l, MONE R.

ISAACS, a citizen of the United States,

residing at Philadelphia and State of Pennsylvania, have inventedcertain new and useful Improvements in Kilns, of which the following isa specification. 7 V

The object of my invention is to provide a kiln of novel, simple andeflicient construction for drying casein and other substances and havingprovision: first, whereby air may e exhausted from the drying chambereither by a mechanically operated exhausting device or by natural draftthrough a flue; secondly, whereby air entering the drying chamber may beheated and regulated whereby'the quantlty of air passing from the dryingchamber may be regulated; and, fourth, whereby various advantages aregained. The invention consists in the novel construction andcombinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention: V

Figure l is a longitudinal, vertical section of my improved kiln.

Figs. 2' and 3 are transverse sections thereof, on lines 2-2 and 3-3,respectlvely, of'Fig. 1.

Referring to the drawings, 4 designates a drying chamber which isinclosed by suitable side walls 5 and 6 and top and bottom walls 7 and8, respectively. One end of the chamber 4 is open, at 9, to admit airthereto, and the other endofthe chamber 4 is open, at 10, andcommunicates with the lower end of a stack 11 which forms a flue risingfrom one end of the chamber 4 and having an open top, as shown.

Theside'wall 5 of the chamber 4 is provided with openings 12 throughwhich the material to be dried may be introduced to the chamber. In thedrawings I have shown a car 13 carrying material to be dried and placedwithin the chamber 4 adjacent to the air inlet opening 9 thereof. Theopenings 12 are normally closed by vertically slldable doors 14 whichare fitted to vertical guideways in bars 15 on the respective sides ofthe openings 12 and risingtherefrom." These doors 14 are provided withcounter-welghts 16 which are attached tochains or cords 17 which passaround suitable pulleys 18 and are attached to the doors 14, as shown,

Specification of Letters Patent.

.lating wall 81 Patented July 3, 491"]. Serial No. 107,905.

whereby the doors 14 may be easily raised and lowered.

' he air entering the chamber 4 is heated by a radiator 19 arrangedwithin the inlet opening 9 and provided with pipes 20 and valves 21 forthe admission of steam to the radiator and the regulation of the steamfor the desired degree of heat.

Arranged inwardly of the radiator 19 within the inlet opening 9 is avertically adjustable partition wall 22 having slots 23 therein throughwhich the air passes as it enters the chamber 4. The side edges of thepartition wall 22 are slidably fitted in guideways in bars 24 on theside walls 5 and 6 and rising therefrom. The partition wall 22 isadapted to be raised from and lowered into the inlet opening 9, througha slot in the top wall 7 of the chamber 4, by means of a chain or cord25 which passes around a pulley 26 on a horizontal bar 27 extendingbetween the bars 24. One end of the cord 25 is attached to the wall 22,and the other end of the cord 25 is provided with a ring 28 which isadapted to be engaged with a hook 29 on one of the bars 24 to maintainthe partition wall 22 elevated when desired. The series of slots oropenings 23 increase in size or area from the top to the bottom of thepartition wall 22 5 and the purpose of this is to heat the chamber 4 toas near a uniform temperature throughout as possible, as the heated airin the passageway naturally ascends when it passes through the chamberunder the influence of a natural draft in the flue 11, As an additionalmeans to keep the warm air down within the chamber 4, I provide a hingeddamper 30 adapted to be lowered from the full line to the dotted lineposition, shown in Fig. 1, within the inlet opening 9 outwardly of theradiator 19.

The outlet opening 10 of the chamber 4 is provided with a regulatingwall 81 adapted to be adjusted vertically to vary the size or area ofthe outlet opening 9. This reguis fitted to guideways 32 in the sidewalls 5 and 6 and in the wall of the stack 11, and it is adapted to belowered from the position shown in Fig. 1, down into the outlet opening10, and when so lowered it will direct the air within the chamher 4downwardly as it passes from the chamber to the flue 11. Hinged, at 33,within the flue 11 adjacent to the top wall 7 of the chamber 4 is adamper 34 which is 31, and the other adapted to be raised on the hinge33 from the full line to shown in Fig. 1. The wall 31 and damper 34 areconnected by a chain or cord 35 which. passes over a pulley 36. One endof the cord35 is attachec end of the cord 35 is attached to the damper 31 near the edge thereof farthest from the hinge 33, whereby, when thedamper 34: is raised, the wall 31 will be lowered, and when the damper34 is lowered, the wall 31 will be raised for a purpose hereinafterexplained.

The wall of the stack 11 opposite to the chamber at has an air outletopening 37 therein which may be closed by a door 38 which is fitted toslide horizontally in guideways in the wall of the stack 11. This outletopening 37 is provided with a fan 39 which may be operated by anysuitable power and which is adapted to exhaust air from the chamber 4through theopening 37.

The operation is as follows: The material to be dried is placed withinthe chamber 4; and, when the fan 39 is employed to exhaust air from thechamber 1, the damper 34: is lowered and the regulating wall 31 isthereby raised, thus causing thedamper 34 to form, in effect, acontinuation of the chamber 4. The partition wall 22 is now raised fromwithin the inlet opening 9, the damper 30 is raised to the full lineposition, and the fan 39 is operated to exhaust air from the chamber aand draw air into the chamber through the inlet opening 9 and around theradiator 19. The air thus passing through the chamber is heated by theradiator and effects the drying operation. Then the fan 39 is not usedto exhaust air from the chamber 4, the damper 30 and the partition wall22 are lowered, the damper 34 is raised, thereby lowering the regulatingwall 31 into the upper portion of the outlet opening 10, and the door 38is moved to close the opening 37. In this position of the parts, anatural draft is created within the flue 11, which draws air in throughthe inlet opening 9 and through the chamber l to effect the drvingoperation, the air passing out through the open top of the stack 11. Theair is drawn to the lower portion of the outlet opening 10 due to theregulating wall 31 which assists the partition wall 22 in controllingthe natural tendency of the heated air within the chamber 4 to ascendand which thereby assists the partition wall 22 in maintaining asubstantially uniform temperaturethroughout the chamber 4.

I claim:

1. The combination of walls forming a drying chamber having an air inletopening and an air outlet opening therein, means to heatair entering theinlet opening, an adjustable partition wall having air inlet openthedotted line position to the top of the wall 7 .means to lating wall when'flue andbeinghinged thereto-near one of ings therein and adapted tocontrol the passage of air into said chamber, and means operative toadjust said partition wall.

2. The combination of walls forming a drying chamber having an air inletopening therein, a stack rising from and form ing a flue communicatingwith-the other'end of the chamber, means to heat air entering the inletopening, a vertically-adjustable, regulating wallzadapted-to vary thesize of the opening between the chamber and the flue, an adjustabledamper within said fine, and means operated by theudamper for adjustingthe regulating wall when the damper is adjusted.

3. The combination of walls forming a drying chamber having an air inletopening therein, the side walls of the chamber having vertical guidewaystherein, a stack rising from and forminga flue communicating with theother .end ofthe chamber, heat air entering the inlet opening, avertically-adjustable regulating wall adapted to vary tween the chamberand the flue, a hinged damper within the flue, and means operated by thedamper for adjusting the reguthe damper is adjusted.

the size of the opening be- 4. The combination of'walls forming a"drying chamber having an air inlet opening therein, the side walls ofthe chamber having vertical guideways therein, awstack rislng from andforming a-fiue communicating with the other end ofthe chamber, means toheat air entering the inlet opening, a vertically-adjustable regulatingwall adapted to vary the size of the opening between the chamber and thefine, a damper withinthe edges adjacent to the regulating wall, a.pulley journaled above the regulating wall and the damper, and aflexible member connecting the regulating wall and the damper andpassing over the pulley, having one of its ends attached to theregulating wall and having the other of its ends attached to the dampernear the edge thereof farthest from its hinge, whereby when the damperis lowered it willmaintain the regulating wall elevated and when theregulating wall is lowered it will maintain the damper elevatec.

5. The combination of walls forming a drying chamber having an air'inletopening therein, a stack rising from and forminga flue communicatingwith the other end of the chamber, means to heat air entering the inletopening, a vertically-adjustable, regulating wall adapted to vary thesize of the opening between the chamber and the flue, an adjustabledamper within said flue, means operated by the damper for adjusting theregulating wall when the damper is adjusted, and means below said damperfor exhausting air from said chamber.

said member its 6. The combination of walls forming a drying chamberhaving an air inlet opening therein, a stack rising from and forming aflue communicating 5 the chamber, means inlet opening,

to heat with the other end of air entering the a vertically-adjustable,regulating wall adapted to vary the size of the opening between thechamber and the flue,

an adjustable damper wi Copies of this patent may be obtained for fivecents each, by addressin thin said flue,

hereto.

MONE R. ISAACS.

g the Commissioner of Patents,

Washington, D. G.

